Internal-combustion engine.



o E. JORGENSEN.

INTERNAL COIVIBUSTION ENGINE.

APPLICATION FILED IULY 1I. 19H5.

Pate/med Jung 11, 1918.

Inventor lll) r earns narra orrori.

onav asma ronenn'snn, or cornnnnann. nnnrannn EMAIL-COMBUSTION ENGHIE.

Specification of Letters Patent. Paigmibgd Jaim@ 1mg jlgpjl,

application tied July l1, 1916. Serial No. 10th-i3 To a Zwaom it may concern:

B it known that ll, OLAv Esnm JoRGnN- SEN, a subject of the King of Denmark, and residing at 16 Fredericiagade, Copenhagen, K, Denmark, have invented certain new and useful Improvements in and Relating to lnternal- Combustion Engines, of which the following 'is a specification.

rlhis invention relates to water circulating gear for supplying cooling water to an internal combustion engine piston.

To form pipe connections which allow water to circulate through the moving piston of an internal combustion engine it is a common practice to provide an inlet and outlet tube onthe piston and to arrange for these tubes to telescope in and out of external tubes which are carried upon a stationary portion of the engine, at the moving joint aching glands of some kind being provi ed to prevent the escape of water. lt has been found, however, that such glands speedily become worn and leak, particularly in marine engines'where salt water is used for circulation purposes.

ln another form of gear which rhas been employed in vertical engines, three telescoping tubes are used which Ht freely one within the other, the intermediate tube being fastened to and moving with the piston, and

' the inlet water being discharged as a strong jet from `the inner stationary tube which projects beyond the outer stationary tube dii into the mouth of the moving tube. rlhe jet in this case must be suihciently powerful to overcome the resistance of the downcoming water in the moving tube which will be very considerable. Such an arrangement, necessitates the use of high pressure water for the circulating system to overcome the inertia of the water which is continually changing its direction of movement in the moving tube.

The object `of the present invention is to overcome the disadvantages of the foregoing arrangements and to provide an improved form of water circulating gear.

The invention consists in a water circulating gear for a vertical internal combustion engine piston having a projecting tube working easily over an internal stationary7 pipe conveying circulating water, in which said tube and pi e form a telescoping conduit through which the supply only is con ducted at a moderate pressure, and any water passing through the sliding joint is led away by a further encircling pipe without having reached the piston.

The invention further consists in a water circulating gear for an internal combustion engine piston in which two tubes carried by the piston and positioned one within the other serve for the water inlet and outlet respectively, a xed pipe which supplies the water telescoping within the inner tube and the outer tubeV telescoping within another fixed pipe which surrounds the supply pipe and leads away the outlet water.

The invention further consists in a method of connecting a circulating water service to the piston of a vertical internal combustion engine in which the inlet pipe is provided with an easily fitting telescoping joint and the leakage from. said joint is entrained by the routlet water which forms a downwardly Howing curtain surrounding the inlet pipe. j

The invention further consists in a water circulating gear comprising a xed upwardly extending inlet pipe, a tube extending from the piston telescoping easily over said pipe, a passage from said tube reaching to the upper portion ofthe hollow piston, a second larger tube enveloping the last and forming an annular passage communieating with the lower portion .of the piston interior, said two tubes communicating freely at their lower ends, an external fined pipe wherein said larger tube loosely telescopes, a liquid supply connection to said inner iXed pipe and a free delivery connection to the external pipe.

The invention also consists in an improved water circulating gear for an internal combustion engine piston as hereinafter described.

Referring now to the accompanying drawing which shows by way of example one way of carrying the invention into effeet in a vertical single-acting internal combustion engine f Attached to the moving piston l of the engine are two tubes, one within the other; the outer one f is fastened to the cover 2, forming the bottom of the piston, by means of a flange f. The internal one c has its top end fastened tightly in the cover 2 and is secured at' the bottom end by means of titi lili

llOB

y A incanta a cone-shaped nut ff] in which are holes h. g is a check nut o nut g.

The internal pipe e is continued by means of a passage e' to the upper portion of the hollow piston, the latter part of the passage being cut in the piston rod. The annular space between the internal and the exten nal pipe iscontinued by means of a passage 7c through the bottom ot the piston.l

e is a pipe through which cooling water is led under moderate pressure to a straight upwardly extending pipe b which has at its lower end a flange m which is tightened by means of a separate flange g against a heavy elastic packing 0 in a recess in the casing n in such a way that the pipe b can move slightly from the perpendicular to allow for inaccurate alinement and to avoid undue wear, without becoming leaky at the joints.

At the top end of the'pipe a there is a bush (l which may be formed of li um vitae or other suitable material and w ich is an easy fit inside the tube e.

From the casing n there is continued upwardly a pipe o which is open at the top and may be provided with a basin 0 having an inturned rim. At the lower end of o there is a discharge pipe 72 r'or the water. 'lhe disu charge pipe should be of ample area and l free from obstructions.

tube e will pass through The arrangement operates as follows "Water ilowing under moderate pressure through a, b and a variable portion of the the passage z to the piston and down through the passage 7c and the annular Space between e and f.

' At the same time a portion will also leak by the bush al down through the internal p1pc e and become mixed up with the main body of water which is passing downthe annular space to the discharge p.-

Any water thatv leaks from the telescoping joint of the supply' pipe will be already moving in a downward direction and as the outlet water when surrounding the same also forms a downwardly moving curtain thereV will bc no tendency for any water to escape from the circulating service so long as the outlet passage ismade free and oi suliic'ient area. 4

By the employment of this invention the use of packing ,glands for the moving joints ot a circulating water gear is entirely obviated and it is alsopossible to work with considerable clearance between the moving parts without incurring any external leakage of circulating water with the attendant drawbacks lt-:will be clear that modificay tions may be made in the arrangement and Ythe manner of carrying the invention into effect, without in any way departing from the spirit of the same.

dit

Having now described my invention, what r securelyv locking the loosely telescopes,

l. In combination in a water circulanng gear for ayertical enginel iston an upwardly extending inlet pipe,

eaibly secured at its lower end, a tubeextending from the piston telescoping easily over said pipe, an enlarged head to said pipe iittin 'v nicely within said tube a dineans lor lea ing the water away from said piston.

2. ln combination in a water circulating gear for a vertical engine piston a pipe se cured below and 'extending water to said piston, a tub depending troni the piston telescoping easily over said pipew a `passage from said tube reaching to the upper portion of' the hollow piston, and a second encircling tube depending from said piston for leading 'water from the lower portion thereof in a downward stream enveloping said pipe and tube so as. to entrain any water leaking past the telescoping joint.

upward to lead dll gear for a vertical engine piston an inlet pipe secured below and extending upward, a tube dependin from the piston telescoping easily over sai pipe, a second larger tube depending from the last to form an annular passageK lor the discharge water7 and an external i wherein said larger tube loosely telescopes..

4. ln combination ina water circulating gear lor a vertical engine iston -an upwardly extending inlet pipe eaibly secured at its lower end, a tube extending troni the piston telescoping easily over said pipe, a second larger tube enveloping the last and connected thereto to term an annular passage having a tree outlet lor the discharge waterpat its lower extremity, and an enn ternal ixed pipe wherein said larger tube 5. ln combination in a water circulatin gear for a vertical engine piston a nue. upwardly extending in et pipe, a tubeentending from the piston telescoping easily -over said pipe, a passage troni said tube reaching to t e u! per portion ol the hollow piston, a second erger' tube enveloping the last and forming an annular passage communicating with the lower ortion el the piston interior, said two tu es being connected and said annulus `having a tree out- -let at the lower endan external uned pipe the piston and enveloping exibly secured ed pipe icc l ieu llil

llll

iat

ldd

Leemeee within said tube, a passage from saiel tube fixed pipe wherein said larger tulle vloosely reaching to the ufiper portion of the hollow telescopes, a liquid supply connection 'to ea-iol piston, a second erger tube enveloping the inner fixed pipe and a free delivery oormee- All@ last and forming an annular passage eomtion to the external pipe.

5 municating with the lower portion of the In testimony whereof ll have sigur-icl rey piston interior, said two tubes communicatname to this specieation. ing freely at their lower ends, an external- @LAV ESKIL JURGENSEN., 

